The coordinate transformation is based on a "Registry" (database) for coordinate reference systems.

Depending on the source and target system the Helmert transformations and a more precise NTv2 transformationen are supported. The Helmert transformation uses a set of 7 parameters, while the NTv2 transformation uses a special displacement grid. The accuracy of the translation corresponds to cartographic requirements in the scale range from 1:25,000 to 1:1,000,000.

Beyond these services, we offer an internationally standardized Web Processing Service (WPS) for the coordinate transformation: